Ethanolic KOH gives from Chemistry Alcohols, Phenols and Ethers

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 Multiple Choice QuestionsMultiple Choice Questions

521.

Ether and alcohol are ...... isomers.

  • chain

  • position

  • functional

  • not isomers


522.

In the following reaction,

Ethyl alcohol(in excess) + H+(from H2SO4) 413 K Product

the product is

  • ethene

  • ethyl hydrogen sulphate

  • diethyl ether

  • acetylene


523.

In Dow's process, the starting raw material is

  • phenol

  • chlorobenzene

  • aniline

  • diazobenzene


524.

In the following reaction sequence,

CH3CHO Ca(OH)2Cl2 X Alc. KOHC6H5NH2 Y

Y is

  • CH3CH=NHC6H5

  • C6H5NHCH3

  • C6H5NC

  • C6H5NCO


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525.

The raw material for Raschig process is

  • chlorobenzene

  • phenol

  • benzene

  • anisole


526.

Phenol gives characteristic colouration with

  • iodine solution

  • bromine water

  • aqueous FeCl3 solution

  • ammonium hydroxide


527.

In the following sequence of reactions

  

The compound C formed will be

  • butanol-1

  • butanol-2

  • 2-methyl propanol-1

  • 1, 1-dimethylethanol


528.

The correct order of dehydration of alcohols is

  • 1° > 2° > 3°

  • 3° > 2° > 1°

  • 2° > 1° > 3°

  • 1° > 3° > 2°


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529.

Ethanolic KOH gives

  • dehalogenation reactions

  • dehydrogenation reactions

  • dehydrohalogenation reactions

  • substitution reactions


C.

dehydrohalogenation reactions

Ethanolic KOH removes hydrogen and halogen atoms from a haloalkane, thus it is a dehydrohalogenating reagent and gives the same type of reactions.


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530.

Which alcohol will give immediate turbidity on shaking with HCl at room temperature?

  • 3-methyl pentan-2-ol

  • 2-methyl butan-1-ol

  • Butan-3-ol

  • 2-methylpropan-2-ol


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